javaexcel生成
java 读excel 还是比较方便简单的，原理就是，先用java 读取excel，然后，一行行的写入数据库，字段的话，你自己程序里面写就行了，给你个例子：
从Excel读取数据,生成新的Excel，以及修改Excel
package common.util;
import jxl.*;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.Number;
import jxl.write.Boolean;
import java.io.*;
/**
* Created by IntelliJ IDEA.
* User: xl
* Date: 2005-7-17
* Time: 9:33:22
* To change this template use File | Settings | File Templates.
*/
public class ExcelHandle
{
public ExcelHandle()
{
}
/**
* 读取Excel
*
* @param filePath
*/
public static void readExcel(String filePath)
{
try
{
InputStream is = new FileInputStream(filePath);
Workbook rwb = Workbook.getWorkbook(is);
//Sheet st = rwb.getSheet("0")这里有两种方法获取sheet表,1为名字，而为下标，从0开始
Sheet st = rwb.getSheet("original");
Cell c00 = st.getCell(0,0);
//通用的获取cell值的方式,返回字符串
String strc00 = c00.getContents();
//获得cell具体类型值的方式
if(c00.getType() == CellType.LABEL)
{
LabelCell labelc00 = (LabelCell)c00;
strc00 = labelc00.getString();
}
//输出
System.out.println(strc00);
//关闭
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**
* 输出Excel
*
* @param os
*/
public static void writeExcel(OutputStream os)
{
try
{
/**
* 只能通过API提供的工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数，
* 因为类WritableWorkbook的构造函数为protected类型
* method(1)直接从目标文件中读取WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile));
* method(2)如下实例所示 将WritableWorkbook直接写入到输出流
*/
WritableWorkbook wwb = Workbook.createWorkbook(os);
//创建Excel工作表 指定名称和位置
WritableSheet ws = wwb.createSheet("Test Sheet 1",0);
//**************往工作表中添加数据*****************
//1.添加Label对象
Label label = new Label(0,0,"this is a label test");
ws.addCell(label);
//添加带有字型Formatting对象
WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true);
WritableCellFormat wcf = new WritableCellFormat(wf);
Label labelcf = new Label(1,0,"this is a label test",wcf);
ws.addCell(labelcf);
//添加带有字体颜色的Formatting对象
WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,
UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.RED);
WritableCellFormat wcfFC = new WritableCellFormat(wfc);
Label labelCF = new Label(1,0,"This is a Label Cell",wcfFC);
ws.addCell(labelCF);
//2.添加Number对象
Number labelN = new Number(0,1,3.1415926);
ws.addCell(labelN);
//添加带有formatting的Number对象
NumberFormat nf = new NumberFormat("#.##");
WritableCellFormat wcfN = new WritableCellFormat(nf);
Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN);
ws.addCell(labelNF);
//3.添加Boolean对象
Boolean labelB = new jxl.write.Boolean(0,2,false);
ws.addCell(labelB);
//4.添加DateTime对象
jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date());
ws.addCell(labelDT);
//添加带有formatting的DateFormat对象
DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss");
WritableCellFormat wcfDF = new WritableCellFormat(df);
DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF);
ws.addCell(labelDTF);
//添加图片对象,jxl只支持png格式图片
File image = new File("f:\\2.png");
WritableImage wimage = new WritableImage(0,1,2,2,image);
ws.addImage(wimage);
//写入工作表
wwb.write();
wwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**
* 拷贝后,进行修改,其中file1为被对象，file2为修改后创建的对象
* 尽单元格原有的格式化修饰是不能去掉的，我们还是可以将新的单元格修饰加上去，
* 以使单元格的内容以不同的形式表现
* @param file1
* @param file2
*/
public static void modifyExcel(File file1,File file2)
{
try
{
Workbook rwb = Workbook.getWorkbook(file1);
WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//
WritableSheet ws = wwb.getSheet(0);
WritableCell wc = ws.getWritableCell(0,0);
//判断单元格的类型,做出相应的转换
if(wc.getType == CellType.LABEL)
{
Label label = (Label)wc;
label.setString("The value has been modified");
}
wwb.write();
wwb.close();
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
//测试
public static void main(String[] args)
{
try
{
//读Excel
ExcelHandle.readExcel("f:/testRead.xls");
//输出Excel
File fileWrite = new File("f:/testWrite.xls");
fileWrite.createNewFile();
OutputStream os = new FileOutputStream(fileWrite);
ExcelHandle.writeExcel(os);
//修改Excel
ExcelHandle.modifyExcel(new file(""),new File(""));
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
2.在jsp中做相关测试，创建一个writeExcel.jsp
<%
response.reset();//清除Buffer
response.setContentType("application/vnd.ms-excel");
File fileWrite = new File("f:/testWrite.xls");
fileWrite.createNewFile();
new FileOutputStream(fileWrite);
ExcelHandle.writeExcel(new FileOutputStream(fileWrite));
%>
在IE中浏览writeExcel.jsp就可以动态生成Excel文档了，其中response.setContentType("application/vnd.ms- excel");语句必须要，才能确保不乱码，在jsp中输入<%@page contentType="application/vnd.ms- excel;charset=GBK"%>不行。
B. 如何导出生成excel文件 java
在编程中经常需要使用到表格（报表）的处理主要以Excel表格为主。下面给出用java写入数据到excel表格方法：
1.添加jar文件
java导入导出Excel文件要引入jxl.jar包，最关键的是这套API是纯Java的，并不依赖Windows系统，即使运行在Linux下，它同样能够正确的处理Excel文件。下载地址:http://www.andykhan.com/jexcelapi/
2.jxl对Excel表格的认识
可以参见http://www.cnblogs.com/xudong-bupt/archive/2013/03/19/2969997.html
3.java代码根据程序中的数据生成上述图片所示的t.xls文件
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import java.io.File;
import jxl.*;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
public class Writer_excel{
public static void main(String[] args) {
//标题行
String title[]={"角色","编号","功能名称","功能描述"};
//内容
String context[][]={{"UC11","设置课程","创建课程"},
{"UC12","设置学生名单","给出与课程关联的学生名单"},
{"UC21","查看学生名单",""},
{"UC22","查看小组信息","显示助教所负责的小组列表信息"}
};
//操作执行
try {
//t.xls为要新建的文件名
WritableWorkbook book= Workbook.createWorkbook(new File("t.xls"));
//生成名为“第一页”的工作表，参数0表示这是第一页
WritableSheet sheet=book.createSheet("第一页",0);
//写入内容
for(int i=0;i<4;i++) //title
sheet.addCell(new Label(i,0,title[i]));
for(int i=0;i<4;i++) //context
{
for(int j=0;j<3;j++)
{
sheet.addCell(new Label(j+1,i+1,context[i][j]));
}
}
sheet.addCell(new Label(0,1,"教师"));
sheet.addCell(new Label(0,3,"助教"));
/*合并单元格.合并既可以是横向的，也可以是纵向的
*WritableSheet.mergeCells(int m,int n,int p,int q); 表示由(m,n)到(p,q)的单元格组成的矩形区域合并
* */
sheet.mergeCells(0,1,0,2);
sheet.mergeCells(0,3,0,4);
//写入数据
book.write();
//关闭文件
book.close();
}
catch(Exception e) { }
}
C. java如何生成excel，具体的
poi或jxl都行
你从网上下载个jxl.jar的jar包
简单说一下jxl导出excel过程
//先创建一个excel文件
String excelPath = "D:\\系统用户.xls";
File excelFile = new File(excelPath);
if (!excelFile.exists()) {
excelFile.createNewFile();
}
WritableWorkbook book = Workbook.createWorkbook(excelFile);
WritableSheet ws = book.createSheet("用户信息", 0); //新建一个sheet
---------------
//往表中添加内容
ws.addCell(WritableCell )
------------
//将数据写入所建的excel
book.write();
book.close();
D. 利用java怎么实现生成报表（Excel文件）
JAVA POI
组件
//创建HSSFWorkbook对象
HSSFWorkbook
wb
=
new
HSSFWorkbook();
//创建HSSFSheet对象
HSSFSheet
sheet
=
wb.createSheet("sheet0");
//创建HSSFRow对象
HSSFRow
row
=
sheet.createRow((short)0);
//创建HSSFCell对象
HSSFCell
cell=row.createCell((short)0);
//用来处理中文问题
cell.setEncoding(HSSFCell.ENCODING_UTF_16);
//设置单元格的值
cell.setCellValue("单元格中的中文");
//定义你需要的输出流
OutputStream
out
=
new
FileOutputStream("viwo.xls");
//输出Excel
E. java怎么导出excel表格
通过这个例子，演示以下如何用java生成excel文件：
import org.apache.poi.hssf.usermodel.*;
import java.io.FileOutputStream;
import java.io.IOException;
publicclass CreateCells
{
publicstaticvoid main(String[] args)
throws IOException
{
HSSFWorkbook wb = new HSSFWorkbook();//建立新HSSFWorkbook对象
HSSFSheet sheet = wb.createSheet("new sheet");//建立新的sheet对象
// Create a row and put some cells in it. Rows are 0 based.
HSSFRow row = sheet.createRow((short)0);//建立新行
// Create a cell and put a value in it.
HSSFCell cell = row.createCell((short)0);//建立新cell
cell.setCellValue(1);//设置cell的整数类型的值
// Or do it on one line.
row.createCell((short)1).setCellValue(1.2);//设置cell浮点类型的值
row.createCell((short)2).setCellValue("test");//设置cell字符类型的值
row.createCell((short)3).setCellValue(true);//设置cell布尔类型的值
HSSFCellStyle cellStyle = wb.createCellStyle();//建立新的cell样式
cellStyle.setDataFormat(HSSFDataFormat.getFormat("m/d/yy h:mm"));//设置cell样式为定制的日期格式
HSSFCell dCell =row.createCell((short)4);
dCell.setCellValue(new Date());//设置cell为日期类型的值
dCell.setCellStyle(cellStyle); //设置该cell日期的显示格式
HSSFCell csCell =row.createCell((short)5);
csCell.setEncoding(HSSFCell.ENCODING_UTF_16);//设置cell编码解决中文高位字节截断
csCell.setCellValue("中文测试_Chinese Words Test");//设置中西文结合字符串
row.createCell((short)6).setCellType(HSSFCell.CELL_TYPE_ERROR);//建立错误cell
// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();
}
}
F. java 怎样解析 excel生成的xml文件
java解析excel生成的xml文件的方法是使用dom4j实现的。
dom4j是一个简单的开源库，用于处理XML、 XPath和XSLT，它基于Java平台，使用Java的集合框架，全面集成了DOM，SAX和JAXP。
1、excel生成的xml样例文件：
<?xml version="1.0"?>
<?mso-application progid="Excel.Sheet"?>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:html="http://www.w3.org/TR/REC-html40">
<DocumentProperties xmlns="urn:schemas-microsoft-com:office:office">
<Created>2006-09-16T00:00:00Z</Created>
<LastSaved>2016-07-25T03:26:50Z</LastSaved>
<Version>14.00</Version>
</DocumentProperties>
<OfficeDocumentSettings xmlns="urn:schemas-microsoft-com:office:office">
<AllowPNG/>
<RemovePersonalInformation/>
</OfficeDocumentSettings>
<ExcelWorkbook xmlns="urn:schemas-microsoft-com:office:excel">
<WindowHeight>7956</WindowHeight>
<WindowWidth>14808</WindowWidth>
<WindowTopX>240</WindowTopX>
<WindowTopY>168</WindowTopY>
<ActiveSheet>2</ActiveSheet>
<ProtectStructure>False</ProtectStructure>
<ProtectWindows>False</ProtectWindows>
</ExcelWorkbook>
<Styles>
<Style ss:ID="Default" ss:Name="Normal">
<Alignment ss:Vertical="Bottom"/>
<Borders/>
<Font ss:FontName="宋体" x:CharSet="134" ss:Size="11" ss:Color="#000000"/>
<Interior/>
<NumberFormat/>
<Protection/>
</Style>
<Style ss:ID="s16" ss:Name="好">
<Font ss:FontName="宋体" x:CharSet="134" ss:Size="11" ss:Color="#006100"/>
<Interior ss:Color="#C6EFCE" ss:Pattern="Solid"/>
</Style>
<Style ss:ID="s17">
<Alignment ss:Horizontal="Left" ss:Vertical="Center" ss:Indent="1"
ss:WrapText="1"/>
<Font ss:FontName="宋体" x:CharSet="134" ss:Size="8" ss:Color="#686868"/>
<NumberFormat ss:Format="@"/>
</Style>
<Style ss:ID="s18" ss:Parent="s16">
<Alignment ss:Vertical="Bottom"/>
</Style>
<Style ss:ID="s19">
<NumberFormat ss:Format="yyyy/m/d\ h:mm:ss"/>
</Style>
</Styles>
<Worksheet ss:Name="Sheet1">
<Table ss:ExpandedColumnCount="6" ss:ExpandedRowCount="3" x:FullColumns="1"
x:FullRows="1" ss:DefaultRowHeight="14.4">
<Row>
<Cell><Data ss:Type="String">工号</Data></Cell>
<Cell><Data ss:Type="String">姓名 </Data></Cell>
<Cell ss:Index="5"><Data ss:Type="String">工号</Data></Cell>
<Cell><Data ss:Type="String">姓名</Data></Cell>
</Row>
<Row>
<Cell><Data ss:Type="Number">111</Data></Cell>
<Cell><Data ss:Type="String">张三</Data></Cell>
<Cell ss:Index="5"><Data ss:Type="Number">111</Data></Cell>
<Cell ss:Formula="=VLOOKUP(R2C5:R3C5,RC[-5]:R[1]C[-4],2)"><Data
ss:Type="String">张三</Data></Cell>
</Row>
<Row>
<Cell><Data ss:Type="Number">112</Data></Cell>
<Cell><Data ss:Type="String">李四</Data></Cell>
<Cell ss:Index="5"><Data ss:Type="Number">112</Data></Cell>
<Cell ss:Formula="=VLOOKUP(R2C5:R3C5,RC[-5]:R[1]C[-4],2)"><Data
ss:Type="String">李四</Data></Cell>
</Row>
</Table>
<WorksheetOptions xmlns="urn:schemas-microsoft-com:office:excel">
<PageSetup>
<Header x:Margin="0.3"/>
<Footer x:Margin="0.3"/>
<PageMargins x:Bottom="0.75" x:Left="0.7" x:Right="0.7" x:Top="0.75"/>
</PageSetup>
<Panes>
<Pane>
<Number>3</Number>
<ActiveRow>7</ActiveRow>
<ActiveCol>5</ActiveCol>
</Pane>
</Panes>
<ProtectObjects>False</ProtectObjects>
<ProtectScenarios>False</ProtectScenarios>
</WorksheetOptions>
</Worksheet>
</Workbook>
2、java解析代码：
import java.io.File;
import java.util.Iterator;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class Demo {
public static void main(String[] args) throws Exception {
SAXReader reader = new SAXReader();
Document document = reader.read(new File("person.xml"));
Element root = document.getRootElement();
Iterator it = root.elementIterator();
while (it.hasNext()) {
Element element = (Element) it.next();
//未知属性名称情况下
/*Iterator attrIt = element.attributeIterator();
while (attrIt.hasNext()) {
Attribute a = (Attribute) attrIt.next();
System.out.println(a.getValue());
}*/
//已知属性名称情况下
System.out.println("id: " + element.attributeValue("id"));
//未知元素名情况下
/*Iterator eleIt = element.elementIterator();
while (eleIt.hasNext()) {
Element e = (Element) eleIt.next();
System.out.println(e.getName() + ": " + e.getText());
}
System.out.println();*/
//已知元素名情况下
System.out.println("title: " + element.elementText("title"));
System.out.println("author: " + element.elementText("author"));
System.out.println();
}
}
}